QuestionI have an 89 ford f150 4x4 with 351v8 the rear passenger wheel locks up when pressing the pedal quickly and doesn't release unless i loosen the bleeder valve , I've replaced the booster, the master cylinder, the rabs valve from junk yard, the wheel cylinders, the brake shoes, the springs, and bled the system and still it locks up. I also replaced the rear brake hose and put in new fluid. Please if you have any suggestions i'd greatly appreciate it, Thank you.
AnswerWow... that is a strange one.
You say the wheel is physically locked up until the bleeder screw is opened? If you lift the rear wheels off the ground and have someone apply the brakes, are both the rear wheels stopped?
If so, then I suspect that you have a restriction in the line between the hose and the right rear wheel. Is the line pinched? Remove it and see if it is easy to blow through or simply replace it.
I have had cases when the hose is damaged and the pressure from the booster was sufficient to push fluid one way, but the springs on the shoes weren't strong enough to push the fluid back, but in the case of the rears, that would cause both rear wheels to remain engaged (assuming they were working and adjusted correctly
Hi again... thanks for the info. I have a question: whty did only the left wheel lock up? was it adjusted more than the right? or ? Just curious. thanks again
